The Influence of Cooling Rate and Alloy Composition on the Formation of Borides during Solidification of Boron-containing TiAl Alloys
Transmission electron microscopy (TEM) and electron backscattered diffraction (EBSD) have been used to identify the crystal structures of long curvy and blocky borides which are formed at different cooling rates in TiAl-based alloys. It has been found that for Ti-45Al-2Nb-2Mn-lB the long curvy borides were either TiB borides with B1 structure or Ti3B4 borides,and the blocky borides were either TiB borides with B27 structure or TiB2 borides. However.for Ti-48Al-2Cr-2Nb-lB both long curvy borides and blocky borides were found to be TiB2 orides. It is inferred that the crystal structures of borides are both composition and cooling rate related.
Cooling rate composition borides crystal structures TiAl alloys
Chao Yang Dawei Hu Xinhua Wu Aijun Huang Mark Dixon
IRC in materials, The University of Birmingham ,Edgbaston B15 2TT,UK Rolls-Royce pk,Derby DE24 8BJ ,UK
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
1416-1420
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）